AutoCodes – Chevrolet – B1935 Chevrolet

B1935 Chevrolet Code - Left Seat Back Heater Circuit

Quick Answer

When the heated seat function is active, the Memory Seat Module (MSM) supplies battery voltage through the element supply voltage circuit to the seat heater elements. Common causes include Faulty Left Seat Back Heater Element, Left Seat Back Heater Element harness is open or shorted, Left Seat Back Heater Element circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1935 Chevrolet indicates Left Seat Back Heater Circuit.
Common causes: Common causes include Faulty Left Seat Back Heater Element, Left Seat Back Heater Element harness is open or shorted, Left Seat Back Heater Element circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,378

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 22, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1935 Chevrolet Description

When the heated seat function is active, the Memory Seat Module (MSM) supplies battery voltage through the element supply voltage circuit to the seat heater elements. The module controls the seat temperature by providing a PWM ground through the heated seat element control circuit to the seat heater elements. The module then monitors the current flow through the heating element and the temperature sensor rate of change to verify correct operation. The OBDII code sets when the module detects that the set point temperature is not to factory specifications.

OBDII Code B1935 Chevrolet - Left Seat Back Heater Circuit - AutoCodes.com — B1935 Chevrolet Code - Left Seat Back Heater Circuit

What does this mean?

What are the Possible Causes of the DTC B1935 Chevrolet?

Faulty Left Seat Back Heater Element
Left Seat Back Heater Element harness is open or shorted
Left Seat Back Heater Element circuit poor electrical connection
Faulty Memory Seat Module (MSM)

How to Fix the DTC B1935 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

B1935 04: Left Seat Back Heater Circuit Open
B1935 0A: Left Seat Back Heater Circuit Rate of Change Below Threshold
B1935 0B: Left Seat Back Heater Circuit Current Above Threshold
B1935 0C: Left Seat Back Heater Circuit Current Below Threshold
B1935 0D: Left Seat Back Heater Circuit Resistance Above Threshold
B1935 0E: Left Seat Back Heater Circuit Resistance Below Threshold
B1935 1F: Left Seat Back Heater Circuit Intermittent

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1935 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1935 Chevrolet Code

1. What does the OBDII code B1935 mean on a Chevrolet?

The code B1935 indicates an issue with the Left Seat Back Heater Circuit, typically related to the heated seat feature on the driverâ€™s side.

2. What are the common symptoms of code B1935 in a Chevrolet?

Common symptoms include the driverâ€™s seat back heater not working, an illuminated warning light, or the heated seat system being completely inoperative.

3. What causes the B1935 code to appear on a Chevrolet?

The code can be triggered by a faulty seat heater element, damaged wiring or connectors, a blown fuse, or a malfunctioning seat heater control module.

4. How can I diagnose the B1935 code on my Chevrolet?

Start by inspecting the wiring and connectors for damage or corrosion, check the seat heater fuse, and test the seat heater element for continuity with a multimeter.

5. Can I still use my vehicle with the B1935 code active?

Yes, the vehicle can still be driven, but the heated seat feature for the left seat back may not function until the issue is repaired.

6. How do I fix the B1935 code on a Chevrolet?

Repairs may include replacing the seat heater element, repairing or replacing damaged wiring, or replacing a faulty seat heater control module.

7. How much does it cost to repair the B1935 code on a Chevrolet?

The cost can vary depending on the issue, but replacing a seat heater element typically ranges from $150 to $400, including parts and labor.

8. Can a blown fuse cause the B1935 code on a Chevrolet?

Yes, a blown fuse in the heated seat circuit can cause this code and should be checked during the diagnostic process.

9. Can I clear the B1935 code without fixing the problem?

Clearing the code without addressing the root cause will only temporarily remove it, and the code will likely reappear.

10. Is the B1935 code a common issue in Chevrolet vehicles?

Itâ€™s not extremely common, but it can occur in vehicles equipped with heated seats, especially in older models or those with frequent use of the seat heaters.